Newb trying to get Set up

Ok, so i have a Wii with 4.3U, i recently softmodded via letterbomb on an SD card, got the homebrew channel and homebrew browser isntalled(on SD Card), now im stuck.

1)The Wii Store has stopped working, it just sits on the loading screen with the spinning ring until i do a hard reset(i have v20)

2)I wanted to softmod to play ISO's of some games via usb my wife wanted to play, but after researching, im completely confused, and need an idiot proof guide. It seems like the guides i find are out of date, and/or i dont understand the lingos.

I know there are guides, but it seems like having a 4.3U seems to be altering my processes from the guides, which leads to confusion.